Description

This series of Designers Guides to the Eurocodes provides comprehensive guidance in the form of design aids, indications for the most convenient design procedures and worked examples. The books also include background information to aid the designer in understanding the reasoning behind and the objectives of the codes. All of the individual guides work in conjunction with the Designers’ Guide to EN1990 Eurocode: Basis of Structural Design.

All aspects of seismic design are covered in Designers’ Guide to EN 1998-1 and 1998-5 Eurocode 8: Design provisions for earthquake resistant structures. General rules, seismic actions and rules for buildings, instead of being distributed across the Eurocodes on actions (EN 1991), design with specificmaterials (EN 1992 – 1996) or geographical design (EN 1997). This was for the convenience of countries with very low seismicity, as theymay not need to apply Eurocode 8 at all.

This present Designers’ Guide covers EN1998-1 (General Rules, seismic actions and rules for buildings) and EN1998-5 (Foundations, retaining structures, geotechnical aspects), both published by CEN at the end of 2004. These two parts of Eurocode 8 will be included, as service items, in all Eurocode packages (each package referring to a specific type of civil engineering structure and construction material) along with EN1990: Basis of Structural Design, EN1997: Geotechnical Design and the relevant parts of EN1991-1: Actions on Structures.

The development of Eurocode 8 as the single seismic design code in Europe has been the focus of the European earthquake engineering community in the past twenty years. Its emergence as the European Standard is important not only for public safety in seismic southern regions of Europe, but also for competitiveness of the entire European consultancy and engineering services sector in seismic regions in Europe and beyond.

This guide is essential reading for:

• Civil and Structural Engineers
• Code-drafting committees
• Clients
• Structural Design students
• Public authorities

Essentially, everyone who will be affected by the Eurocodes will find this book invaluable.

Contents

• Chapter 1. Introduction
• Chapter 2. Performance requirements and compliance criteria
  2.1 Performance requirements for new designs in Eurocode 8 and associated seismic hazard levels
  2.2 Compliance criteria for the performance requirements and their implementation
  2.3 Exemption from the application of Eurocode 8
• Chapter 3. Seismic Actions
  3.1 Ground conditions
  3.2 Seismic action
  3.3 Displacement Response Spectra
• Chapter 4. Design of Buildings
  4.1 Scope
  4.2 Conception of structures for earthquake resistant buildings
  4.3 Structural regularity and implications for the design
  4.4 Combination of gravity loads and other actions with the design seismic action
  4.5 Methods of analysis
  4.6 Modeling of buildings for linear analysis
  4.7 Modeling of buildings for nonlinear analysis
  4.8 Analysis for accidental torsional effects
  4.9 Combination of the effects of the components of the seismic action
  4.10 "Primary" vs. "secondary" seismic elements
  4.11 Verifications
  4.12 Special rules for frame systems with masonry infills
• Chapter 5. Design and detailing rules for concrete buildings
  5.1 Scope
  5.2 Types of concrete elements-Definition of their "critical regions"
  5.3 Types of structural systems for earthquake resistance of concrete buildings
  5.4 Design concepts: Design for strength or for ductility and energy dissipation-Ductility Classes
  5.5 Behaviour factor q of concrete buildings designed for energy dissipation
  5.6 Design strategy for energy dissipation
  5.7 Detailing rules for local ductility of concrete members
  5.8 Special rules for large walls in structural systems of large lightly reinforced walls
  5.9 Special rules for concrete systems with masonry or concrete infills
  5.10 Design and detailing of foundation elements
• Chapter 6. Design and detailing rules for steel buildings
  6.1 Scope
  6.2 Dissipative versus low dissipative structures
  6.3 Capacity design principle
  6.4 Design for local energy dissipation in the elements and their connections
  6.5 Design rules aiming at the realisation of dissipative zones
  6.6 Background of the deformation capacity required by Eurocode 8
  6.7 Design against localization of strains
  6.8 Design for global dissipative behaviour of structures
  6.9 Moment resisting frames
  6.10 Frames with concentric bracings
  6.11 Frames with eccentric bracings
  6.12 Moment resisting frames with infills
  6.13 Control of design and construction
• Chapter 7. Design and detailing of composite steel-concrete buildings
  7.1 Introductory remark
  7.2 Degree of composite character
  7.3 Materials
  7.4 Design for local energy dissipation in the elements and their connections
  7.5 Design for global dissipative behaviour of structures
  7.6 Properties of composite sections for analysis of structures and for resistance checks
  7.7 Composite connections in dissipative zones
  7.8 Rules for members
  7.9 Design of columns
  7.10 Steel beams composite with slab
  7.11 Design and detailing rules for moment frames
  7.12 Composite concentrically braced frames
  7.13 Composite eccentrically braced frames
  7.14 Reinforced concrete shear walls composite with structural steel elements
  7.15 Composite or concrete shear walls coupled by steel or composite beams
  7.16 Composite steel plates shear walls
• Chapter 8. Design and detailing rules for timber buildings
  8.1 Scope
  8.2 General concepts in earthquake resistant timber buildings
  8.3 Materials and properties of dissipative zones
  8.4 Ductility classes and behaviour factors
  8.5 Detailing
  8.6 Safety verifications
• Chapter 9. Seismic design with base isolation
  9.1 Introduction
  9.2 Dynamics of seismic isolation
  9.3 Design criteria
  9.4 Seismic isolation systems and devices
  9.5 Modelling and analysis procedures
  9.6 Safety criteria and verifications
  9.7 Design seismic action effects on fixed base and isolated buildings
• Chapter 10. Foundations, retaining structures and geotechnical aspects
  10.1 Introduction
  10.2 Seismic action
  10.3 Ground properties
  10.4 Requirements for sitting and for foundation soils
  10.5 Foundation system
  10.6 Soil-structure interaction
  10.7 Earth retaining structures

About the Authors

Amr Elnashai, Fellow of the Royal Academy of Engineering is D. B. Willett Professor of Engineering at the University of Illinois at Urbana-Champaign and Director of the Mid-America Earthquake Centre. He is also Director of the George E. Brown Network for Earthquake Engineering Simulations (NEES) Laboratory at Illinois and a member of the drafting panel of the European Seismic Design Codes and past senior Vice-President of the European Association of Earthquake Engineering.

Andre Plumier is Professor and Head of the Earthquake Engineering Group of the Mechanics of Material and Structures Department at the University of Liege, Belgium. Most of his work has been devoted to the seismic behaviour of steel and composite steel structures, followed by expert work on the subject in the preparation of Eurocode 8.

Ezio Faccioli has been Professor of Earthquake Engineering and Engineering Seismology at the Politecnico di Milano for the past twenty years. He is currently on the Board of Directors of the International Association of Earthquake Engineering (IAEE), coordinating editor of the Journal of Seismology, and convenor of the project team charged with drafting Part 5 of Eurocode 8 and with its transformation into a European norm.

Eduardo C. Carvalho has worked as a principal researcher at the National Laboratory for Civil Engineering (LNEC), Lisbon where he headed the Centre for Earthquake Engineering. He is Secretary of CEN/TC250/SC8 – the CEN body responsible for the preparation of Eurocode 8. Since 1998 he has been a member of the Steering Committee of the International Federation for Structural Concrete (fib), and is a member of the editorial board of the journal of Earthquake Engineering.

Michael N. Fardis is Professor of Concrete Structures and Director of the Structures Laboratory at the University of Patras, Greece. As chairman of the committee for Eurocode 8: ‘Design of Structures for Earthquake Resistance’ since 1999, he led the development of its six parts into European Standards. From 1998 until 2002 he served as elected member of the Steering Committee of the International Federation for Structural Concrete (fib) and as elected member of its presidium since 2002. He is a member of the editorial boards for the Journal of Earthquake Engineering and Structural Dynamics, Structural Concrete and the Journal of Earthquake Engineering.

Paolo E. Pinto is Professor of Earthquake Engineering at La Sapienza, University of Rome. He has been involved in the preparation of the Eurocodes since 1985, and was chairman of CEN/TC250/SC8 from 1990 until 1999, overseeing the developement of ENV drafts of all the Eurocode 8 parts. He is chairman of fib Commission 7 on seismic design and is also a member of the editorial boards for the Journal of Earthquake Engineering and Structural Dynamics and the Journal of Earthquake Engineering.